12428688890 has 8 divisors (see below), whose sum is σ = 22371640020. Its totient is φ = 4971475552.

The previous prime is 12428688887. The next prime is 12428688893. The reversal of 12428688890 is 9888682421.

It is an interprime number because it is at equal distance from previous prime (12428688887) and next prime (12428688893).

It can be written as a sum of positive squares in 2 ways, for example, as 12341210281 + 87478609 = 111091^2 + 9353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12428688893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621434435 + ... + 621434454.

Almost surely, 2^12428688890 is an apocalyptic number.

12428688890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12428688890 is a deficient number, since it is larger than the sum of its proper divisors (9942951130).

12428688890 is a wasteful number, since it uses less digits than its factorization.

12428688890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242868896.

The product of its (nonzero) digits is 3538944, while the sum is 56.

The spelling of 12428688890 in words is "twelve billion, four hundred twenty-eight million, six hundred eighty-eight thousand, eight hundred ninety".